5932-27-4
3-吡唑甲酸乙酯
→
26275-64-9
1H-吡唑-5-碳酰肼
56976-88-6
1,2-dihydro-1-oxopyrazolo[1,5-d]-1,2,4-triazine
122-51-0
原甲酸三乙酯